20852480

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1481}}^1$

素因数の和:1513

約数の個数: 72

約数和(自身を含む): 54525744

約数和(自身を除く): 33673264

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 640, 704, 880, 1280, 1408, 1481, 1760, 2816, 2962, 3520, 5924, 7040, 7405, 11848, 14080, 14810, 16291, 23696, 29620, 32582, 47392, 59240, 65164, 81455, 94784, 118480, 130328, 162910, 189568, 236960, 260656, 325820, 379136, 473920, 521312, 651640, 947840, 1042624, 1303280, 1895680, 2085248, 2606560, 4170496, 5213120, 10426240, 20852480]

約数ペア:

[(1, 20852480), (2, 10426240), (4, 5213120), (5, 4170496), (8, 2606560), (10, 2085248), (11, 1895680), (16, 1303280), (20, 1042624), (22, 947840), (32, 651640), (40, 521312), (44, 473920), (55, 379136), (64, 325820), (80, 260656), (88, 236960), (110, 189568), (128, 162910), (160, 130328), (176, 118480), (220, 94784), (256, 81455), (320, 65164), (352, 59240), (440, 47392), (640, 32582), (704, 29620), (880, 23696), (1280, 16291), (1408, 14810), (1481, 14080), (1760, 11848), (2816, 7405), (2962, 7040), (3520, 5924)]